1. **State the problem:** We want to find how many times more people live in New York City than in Baltimore in 2020. 2. **Given data:** - Population of New York City: $9 \times 10^6$ - Population of Baltimore: $6 \times 10^5$ 3. **Formula:** To find how many times more people live in New York City than Baltimore, divide the population of New York City by the population of Baltimore: $$\text{Times more} = \frac{\text{Population of NYC}}{\text{Population of Baltimore}}$$ 4. **Calculation:** $$\frac{9 \times 10^6}{6 \times 10^5} = \frac{9}{6} \times \frac{10^6}{10^5} = 1.5 \times 10^{6-5} = 1.5 \times 10^1$$ 5. **Simplify:** $$1.5 \times 10^1 = 1.5 \times 10 = 15$$ 6. **Interpretation:** About 15 times more people live in New York City than in Baltimore in 2020.